HIDConnectionEvent

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Secure context: This feature is available only insecure contexts (HTTPS), in some or allsupporting browsers.

Experimental:This is anexperimental technology
Check theBrowser compatibility table carefully before using this in production.

Note: This feature is available inWeb Workers, except forShared Web Workers.

TheHIDConnectionEvent interface of theWebHID API represents HID connection events, and is the event type passed toconnect anddisconnect event handlers when a device's connection state changes.

Constructor

HIDConnectionEvent()Experimental: Returns a newHIDConnectionEvent object. Typically this constructor is not used as events are created when a device's connection state changes.

Instance properties

This interface also inherits properties fromEvent.

HIDConnectionEvent.deviceRead onlyExperimental: Returns the HIDDevice instance representing the device associated with the connection event.

Examples

The following example registers event listeners forconnect anddisconnect events, then prints theHIDDevice.productName to the console.

navigator.hid.addEventListener("connect", ({ device }) => {  console.log(`HID connected: ${device.productName}`);});navigator.hid.addEventListener("disconnect", ({ device }) => {  console.log(`HID disconnected: ${device.productName}`);});